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29-12-07, 10:07 AM | #1 | |
Devon Pastie Muncher
Classic Audi Club Member
Join Date: Jul 2007
Location: Calne Wiltshire
Posts: 7,530
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Audi 100 89G revs dropping when downshifting
Hi,
I have a 89G 100 quattro with the NF engine (2309cc). From cold, and when warmed up too, when I put the clutch down to change gear, the revs drop to 600rpm, and then stabilise at 800-820 ish. Very occasionally it will stall as the revs drop too far. Also, the power steering gets heavier as the pump isn't being driven I guess. Any ideas? Steve |
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04-01-08, 03:38 PM | #2 |
Devon Pastie Muncher
Classic Audi Club Member
Join Date: Jul 2007
Location: Calne Wiltshire
Posts: 7,530
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04-01-08, 03:56 PM | #3 |
4 Ring Mafia
Classic Audi Club Member
Join Date: Jul 2007
Location: on the side of a hill in Shropshire!
Posts: 28,215
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Is it just on cold or when she gets warm?
I had a similar thing on both my old 90 quattro and B3 Coupe 2.2 10v, but it was only when it was cold. the 90q seemed to almost stall momentarily a few times from cold start. I did post up a thread about this somewhere else about 12 months ago and I think the answer pointed to a few possibilities, one being the Air Flow meter, which more often than not, seems to be the root of many problems. |
04-01-08, 04:04 PM | #4 |
Devon Pastie Muncher
Classic Audi Club Member
Join Date: Jul 2007
Location: Calne Wiltshire
Posts: 7,530
|
Where do you plug VAG-COM in on this car (ONLY JOKING!)
I've put it on Audifans too. My car may be too new! (once again, only joking). I consider this car to be a classic Audi, as it originally came out in 1982. I had the later 100 (J reg) but that is styled like a newer car. However, it has the 5 pot engine. Who thinks the best Audis were 80s cars? I would say this 89G 100 is more solid than our old 99V A4 avant...... |
04-01-08, 11:00 PM | #5 |
Devon Pastie Muncher
Classic Audi Club Member
Join Date: Jul 2007
Location: Calne Wiltshire
Posts: 7,530
|
think it might be the idle stab valve...... same problem on my 2.3 100 J plate......
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13-01-08, 01:15 PM | #6 |
Devon Pastie Muncher
Classic Audi Club Member
Join Date: Jul 2007
Location: Calne Wiltshire
Posts: 7,530
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cleaned the idle stabilisation valve today, problem sorted. Now idles at 800 rpm.
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